2.8÷0.85○2.8 253.1÷0.1○253.1 ×10
5.4×1.2=
0.54×1.2=
6.3÷0.7=
6.3÷0.07=
4.83÷0.07=÷7
1.96÷0.8=÷8
16.3÷9.63=÷ 54.38÷6.4=÷
你的理由是:
A.35.7+219.1
B.400-199.9
C.29.5×9
D.34.8÷0.1